Hi and thanks in advance. This may be a simple fix but I can't reach the original coder and my googling has only produced other people having the same problem but no solutions.
I have attached the code.
and here is the error I am getting:
exit status 1
'gps_port' was not declared in this scope
Any ideas would be greatly appreciated and please let me know if I'm going about asking in the right way.
HighAltitudeBalloon3.2.ino (10.1 KB)